<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 


</head> 
<body>

        <table width="100%" border="0" cellspacing="0" cellpadding="0">

            <tbody>

                <tr>

                    <td height="101" align="center">

                        <div id="localImag" style="border: 1px solid red;">

                             <img id="preview" src="" width="100" height="100" style="display: block;border: 1px solid blue;" />

                        </div>

                    </td>

                </tr>

                <tr>

                    <td align="center" style="padding-top:10px;">

                    <form method="get" action="xznetwork" name="textfile">

                       <input type="file" name="file" id="doc" multiple="multiple" style="width:150px;" onchange="javascript:setImagePreview();">

</form>

                    </td>

                </tr>

            </tbody>

        </table>

    </body>
    <script type="text/javascript">

            //下面用于图片上传预览功能

            function setImagePreview(avalue) {

            //input

                var docObj = document.getElementById("doc");

			//img

                var imgObjPreview = document.getElementById("preview");

                //div

                var divs = document.getElementById("localImag");

                if (docObj.files && docObj.files[0]) {

                    //火狐下，直接设img属性

                    imgObjPreview.style.display = 'block';

                    imgObjPreview.style.width = '100px';

                    imgObjPreview.style.height = '100px';

                    //imgObjPreview.src = docObj.files[0].getAsDataURL();

                    //火狐7以上版本不能用上面的getAsDataURL()方式获取，需要一下方式

                   imgObjPreview.src = window.URL.createObjectURL(docObj.files[0]);

                } else {

                    //IE下，使用滤镜

                    docObj.select();

                    var imgSrc = document.selection.createRange().text;

                    var localImagId = document.getElementById("localImag");

                    //必须设置初始大小

                    localImagId.style.width = "100px";

                    localImagId.style.height = "100px";

                    //图片异常的捕捉，防止用户修改后缀来伪造图片

                    try {

                        localImagId.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)";

                        localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc;

                    } catch(e) {

                        alert("您上传的图片格式不正确，请重新选择!");

                        return false;

                    }

                    imgObjPreview.style.display = 'none';

                    document.selection.empty();

                }

                return true;

            }

        </script>

</html> 
